RECOVERY OF WASTEWATER IN ÇANKIRI FOR AGRICULTURAL IRRIGATION

Abstract: This study aimed to determine the effluent quality required to irrigate local agricultural products in a year scale using Çankırı Şabanözü wastewater treatment plant (WWTP) effluent in place of discharge to a receiving water body. Anaerobic and facultative stabilization pond was chosen as the WWTP type and removal degrees were accepted as 73, 67 and 83% respectively for Biochemical Oxygen Demand (BOD), chemical Oxygen Demand (COD), suspended solid (SS) parameters. AWWTP effluent wastewater did not meet the standart according to WWTP Technical Methods Regulation in electrical conductivity (EC) and therefore, was not suitable for agricultural irrigation. Agricultural products grown in Çankırı were evaluated based on their water need and quality and sugar beet and wheat were chosen to be suitable for irrigation after a 90% EC removal via ultra membrane filtration unit. The additional unit was designed with a solar energy unit of 630 m2 area to supply the operational energy of the mebrane filtration and the irrigation need for wheat during January-March and November-December and sugar beet during the rest of the year to compensate the shortage of water from natural precipitation.